Maximum Cold Retention

It's basic science: heat rises and cold falls.

Our tapered design capitalizes on this by integrating R-20 insulation in the top and expands to an astounding R-60 at the base.

What is R-Value?

R-value is the measurement of how effectively a material is insulated.  It measures how effectively a material resists the flow of hot or cold, with a higher R-value indicating greater insulating performance. The higher number the better.

It is simply the measure of thermal resistance. 

Every material has an R-value.  For example, a standard brick wall has an R-value of about 0.5.  Not very good, meaning that cold and hot can pass through easily.  Cheaper, entry level coolers have R-values of around R-4 to R-8.  High-end coolers have R-values around R-14-R-24.  

In other words, how good is it at getting cold and staying cold?  The higher the number, the better it is.  

Beware of companies that say "fully-insulated" without telling you what their R-value actually is. Every plunge insulation has an R-value (even if it's almost zero).  Don't be afraid to ask a manufacturer what their plunge's R-value is.  It's not hard to see why POLR's R-60 base far outperforms everything else on the market.